I use this "feature". But generally I use the same number for all items because it is a pain to have to renumber everything.

maybe the solution is to renumber if a list uses all 1's, but leave it untouched if it has different out of order numbers.

So this gets renumbered:

1. item 1

1. item 2

1. item 3

But this does not:

1.

3.

7.